Construction of Security Control and Protection of Internal and External Networks of Communication Terminals Under the Heterogeneous Network Environment

The construction of network security control and protection system of internal and external communication terminals under the heterogeneous network environment can promote the research and development of power network security technology, promote the information construction and intelligent upgrading of the power grid, and improve the overall operation level and competitiveness of the power grid. Based on this, this paper proposes the construction of security control and protection of communication terminals under the heterogeneous network environment of the power grid. By analyzing the condition of grid heterogeneous network environment, the communication terminal network security control system to build design, build the network isolation, certification and authorization, traffic monitoring, and security reinforcement, in order to improve the network heterogeneous network environment communication terminal network security control efforts, comprehensive guard against all kinds of network attacks or malicious software intrusion, improve the overall security performance of power grid system.